7 
15 
2 iPhone switches on when plugging in battery or power supply.
Hey guys,
I had an iphone with audio ic problem. Jumped C12 and tried starting it with a power supply. It told me it was short and I found a capacitor that was loose on VCC main. It was on the other side of the main board so it should not have been me who knocked it “loose”
Now when i plug in the battery or power supply the phone starts automatically. I have not seen this happen. When I switch off the phone it also reboots
Removed the audio IC to check if something is shorted but it looks clean and audio recording also work.
removed all the “glue” around the “power on button“ jack and dock connector jack and everything looks clean. Measured their values and those are all also correct according to ZXW.
EDIT: Swapped a board for the customer. I will send his board to China for repair. Labor isn’t worth the time/money.
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3 Комментариев
Interesting. So with the J4501 flex disconnected it still fires up when you connect the battery? What about the dock connector disconnected?
из Chris Stables
Yes it does and sorry for the late reply, it powers up whether it’s the battery or power supply. I removed the main board out of the case and nothing is attached.
из KWH
I have never uncounted this before. If it was me I would remove the audio IC and see if it still does it. There are a few connections under there that go to Tristar.
из Chris Stables